Wrench



C. L. KELLY.

WRENCH.

APPLICATION FILED DEC-24, 1919.

l 3 5 1 5 1 9. Patented Aug. 31, 1920.

" Z r;- j/ JM (5 [61AM j err CHARLES L. KELLY, orjnnraorr, uronreelv. I

wnnivon,

To all whom it may concern:

r the length of the bar.

Be itknown that I, CHAnLns L. IQELLY, a

vcitizen of the United States of America, residing at Detroit,- in the county of \Vayne and State of Michigan, have invented certain new and useful Improvements in renches; and I do 'hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a wrench. It is a primary object and purpose of the present invention to make a wrench which is particularly quick acting for fitting the same to a nut or bolt to be operated upon by the wrench and also one which may be disengaged from the nut or bolt as quickly as it may be engaged therewith The invention consists of many novel arrangements of parts for attaining this end in an especially effective manner as will appear from the following descriptions, taken in connection with the accompanyin gg drawing,"in. which: Figure l is a plan view ofa preferred form of construction of the wrench."

Fig:- 2 ma side'elevation thereof, oneof the side plates bein removed to disclose the inner structure, and m Fig. 3 is a side elevation of the modified form of construction of the wrench, a part of one of the side plates being broken away. in the drawing like reference characters refer to like parts inthe different figures in the preferred form of construction ;shown in Figs. 1 and 2, a central bar 1' is used which is made from steel, preferably,

the same at its forward'upper edge being inclined downwardly and provided with a series of teeth In front of and below this portionthe bar is extended and curved as indicated at 3, termlnating in a fixed aw 4,

the inner face of which lies at an angle to At each side of. the bar, plates 5 of metal are placed, being permanently connected to the bar by meansof transverse pins6, a number of which are used.

member having a jaw portion 7, the inner face of whichis parallel to the inner face said jaw member on its under" surface, be-

l-issociated with this bar is a second Specification of Letters Patent. l atntgd 31 1929 Application filed December 24, 1919. Serial 1e;- srr z fa.

ing arsed with a series or teeth 9 which match and are adapted to co act-with the teeth 2 on the bar 1 previ'ously ,.described. The lower portion 8 of this jaw member lies between the plates 5 and is freely movable to' ward or away from jaw 4. On "its outer side above the plates 5: the movable jaw memberhas a knurled or otherwise roughened surface 10 to he engaged by the thumb of'the operator for moving'themovablef -.jaw mem'be'rtoward the fixed jaw 4. The plates-dares provided with parallel slots 11 and apin 12' passes through the movable jaw member and has its ends received in the slots, it "being apparent that the movement of the movable jaw member is limited by said slots. Y I r A pin l3 is attached to the movable jaw 11161111361" on theout'er side thereof. fT'oit one end of-a U-shap ed wire'l l'iisconn'ected,

the same extending back from the movable aw and hav ng itsends formed into coils :15 which'arereceivedin suitable recesses cut 1nto the barl. The ends of the coils are attached to a transverse postl ti which is held between the side plates 5 ,these coils have a'tende'ncy to-pull the'movable jaw "member totherear; andwh'enever said jaw member is moved toward. the fixed jaw 4:

the coilsa'retightened and their tension increased asls evident.

To move the movable jaw membertoward the fixed jaw member it is necessary merely to take the wrench in the hand and place the thumb against the roughened surface at 'lOfand push forward on the same whereupon the teeth 9 will ride over teeth-'2, and as soon as the=jaw member is releasedthe force of the spring will tend to pull the teeth 9 into engagement with teeth 2 thus; 1

holding the movable jaw member in any 'po'sitiontowhich it may be moved. In the drawing the size of the teeth 2 and 9 is necof any nut'or bolt head within the range of the wrench'is almost instantly made. To release the wrench it is necessary merely to press withthe thumb against the outer end of the movable jaw member at a point/above the roughened surface '10'whereupon said jaw portion 4 and located at thefront end member fulcrums on the pin 12' and elevates the teeth 9 above the teeth 2 so that the springcoils at'l5 may draw the movable jaw member back as far as is necessary-r desirable. I

In Fig. 3, a slightly modified form of structure is shown in which the bar 1 is re-'.

placed by two parts, one the bar '17 which has a rear spring extension 18, and the other the curved section 3 formed with a fixed or bar 17, The side plates 5 are used as beztore and pinsfifi pass through the bar 17 and the part 3? to secure the parts firmly together. A leaf spring 19 is held at one end between the forward end of bar 17 and a the adjacent end of the part .3 as shown 1n.

Fig. 3; and the free end of this spring is curved upwardly and against the inner face of the -jaw"meml; er 7 which is identical in construction with and is mounted the same as the movable aw member first described,

.it having teeth 9 on itsunder sides to engage with teeth 2 formed on the bar 17.

-At the rear end of the wrench a screw 7 driver blade 20 and a knife blade 21 may be mounted on a pivot 22 and the same closed to lie between the sides 5 or opened 'out'avitlitl e usual. jack knife principle of operation, the spring backfor which is atforeed by the extension- 18 to the bar 17.

V. This construction so far as the wrench is concerned, operatesexactly the, same as the :one first described, the only difierence'being :that a leafspring 1 9 resists the .inward movement of -the'movable jaw member instead of a coil spring as shown in Fig] 2.

p This wrench-is of veryasimple construction and is very quickly and easily operated: It is particularly useful around motor vehicles where nuts of relatively small I sizes are used and 1n which different sizes of nuts require adjustment of the jaws of the wrench to engage therewith. l

Iclaiin:' v j 1. A wrench comprising abar having a I downwardly inclined upper edge portion provided with ratchet teeth, a. fixed jaw member at the front end of the bar, side plates permanently secured one at each side of the bar and fixed jaw member, a movable jaw member provided with ratchet teeth on its lower side, said ratchet teeth being adapted to engage with the ratchet teeth .on

said bar, means for slidably mounting the movable aw member between the side plates for guidance thereby, and spring means tending to move the movable jaw member away itrom the fixed aw member and also hold the teeth of the movable jaw member in engagement with the teeth on the bar,

substantially as and for purposes described.

2. A wrench comprising an integral bar and jaw member, said jaw member having an inner face located at an angle to the length of the bar, and said barhaving a downwardly inclined upper surfaceback of "the aw member formedwith a consecutive seriesof ratchetteeth cut transversely 9f thebar, a movable aw member mounted above the bar and provided with a consecutive series of ratchet teeth on itsu-nder side out transversely of the movable: aw

member and adapted to engage with the ratchet teeth on the bar, means for slidably mounting the movable jaw member whereby the same may move toward or away from the fixed jawmember, and spring means normally tendingto move the movablefjaw member away from the fixed aw member and also hold the teeth of themovablejaw member in engagement with the teeth on the bar, substantially as and for the purposes described. 1 3. In a wrench, spaced apart side plates,

a fixed jaw member permanently connected to and lying between theside plates and having a aw extending outwardly at an angle to the length of the sideplates, said ber and a single yielding means tending to I move the movable aw member away from the fixed jaw member when the holding means is released andalso yieldingly maintainlng said holding means against release,

substantially as described. 7

4. In a wrench, a bar, a jaw member positioned at an angle to the length of the bar and located at one end of the bar, a

movable jaw member located abovethe bar and movable toward or away from the fixed jaw member, interengaging,means'on the movable jaw member and the bar for holding the movablejaw member in any one of a number, of positions against movement away from the 'fixed jaw member, and.

spring means associated with the ,movable jaw member tending to move thesame away from the fixedjaw member, and also yieldingly maintain said interengaging means'in engagement, substantlally as describedf 5. In a wrench, a bar, side plates, one at each side of the bar and permanently con:

nected thereto, a fixed jaw memberatone end ofthe bar, a plurality of" ratchet teeth forined'on the upper edge of the'bar back of the fixed jaw member, a movable jaw member located between the plates, said plates each having. a slot therein, means on .the movable jaw member entering the slots forslidably mounting the jaw member, said movable jaw 'member being: formed with ratchet teeth on its lower side to engage fixed jaw member when the ratchet-teeth on with ratchet teeth on the bar and holding the same are disengaged from the ratchet the movable jaw member in any position to teeth on the bar and also normally holding 10 Which it may be adjusted against movement a said ratchet teeth in engagement. 7 away from the fixed jaw member, and spring In testimony WhereofI aflix my signature. means associated With the movable jaw I j member for moving the same away from the V 7 CHARLES L. KELLY. 

